CHAPTER 3
Configuring the Gateway
112
Secondary Server
Figure 109. SSH Tunnel - Secondary Server
A secondary SSH server can be used as alternative SSH tunnel, e.g.
if no connection to the primary SSH service can be established. An
alternative SSH service with identical or different host name can be
used for the secondary SSH server.
Note: In principle, a secondary SSH server is not necessary for a
SSH tunneling.
Notification Sending
A notification is an event that is either created by a sensor of an
RTU changing its value (digital ports) or reaching a configured
threshold (analog ports), an RTU itself (depending on data delay
and radio error rates) or the Gateway (for some internal events like
rebooting, configuration changes, dialling into an ISP). These noti-
fications are queued and sent to the notification server.
The A850 supports sending notifications to servers using HTTP,
SMS and SMTP (E-Mail) over a primary and a secondary server for
each of these methods. The primary server is tried first, the sec-
ondary only when the primary server couldn't be contacted.
Note: To send notifications as SMS messages, an external GSM
modem must be connected to the A850!
Содержание A850
Страница 92: ...CHAPTER 3 Configuring the Gateway 92 Figure 81 PPP Configuration Window ...
Страница 107: ...CHAPTER 3 107 Figure 101 SSH Tunnel Window The following window areas are available through the SSH tun nel window ...
Страница 128: ...CHAPTER 3 Configuring the Gateway 128 Figure 132 Dialup Modem Window ...
Страница 164: ...CHAPTER 3 Configuring the Gateway 164 ...
Страница 177: ...CHAPTER 4 Sensor Type Configuration 177 Figure 183 Sensor type Window Analog ...
Страница 196: ...CHAPTER 4 Using the Gateway 196 Figure 216 Sensor type Window LC ...
Страница 200: ...CHAPTER 4 Using the Gateway 200 Figure 222 Sensor type Window OC ...
Страница 204: ...CHAPTER 4 Using the Gateway 204 Figure 228 Sensor type Window SDI ...
Страница 215: ...CHAPTER 4 Logs 215 Figure 241 System Log Selection Log types Figure 242 System Log Log types ...
Страница 275: ...CHAPTER 4 RTU Network Configuration 275 Sensor details Figure 319 Sensor details Window ...
Страница 366: ...CHAPTER 6 Appendix 366 ...